EP1860324A2 - Verbesserung bei einer hydraulischen Turbinenkreiselpumpe - Google Patents

Verbesserung bei einer hydraulischen Turbinenkreiselpumpe Download PDF

Info

Publication number: EP1860324A2
Authority: EP; European Patent Office
Prior art keywords: delivery conduit; impeller; transition region; pumping chamber; turbine pump
Prior art date: 2006-05-24
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP07107420A

Other languages

English (en)

French (fr)

Other versions

EP1860324A3 (de

EP1860324B1 (de

Inventor

Fabrizio Sandron

Sergio Bonacina

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Appliances Components Cos SpA

Original Assignee

Appliances Components Cos SpA

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2006-05-24

Filing date

2007-05-03

Publication date

2007-11-28

2007-05-03 Application filed by Appliances Components Cos SpA filed Critical Appliances Components Cos SpA

2007-05-03 Priority to PL07107420T priority Critical patent/PL1860324T3/pl

2007-11-28 Publication of EP1860324A2 publication Critical patent/EP1860324A2/de

2008-03-05 Publication of EP1860324A3 publication Critical patent/EP1860324A3/de

2009-07-29 Application granted granted Critical

2009-07-29 Publication of EP1860324B1 publication Critical patent/EP1860324B1/de

Status Not-in-force legal-status Critical Current

2027-05-03 Anticipated expiration legal-status Critical

Links

Images

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps

Definitions

the present invention relates to an improved kind of centrifugal turbine pump, preferably of the type generally used in connection with electrical home appliances, such as clothes washing machines, dishwashers, and the like, and provided therefore with such design and operating specifications as generally required in view of such applications.
pumps of the above-cited kind are generally used in appliances and machines that are required to be very competitive as far as both costs and energy efficiency are concerned, a considerable, constant effort is most obviously being made in industry by manufacturing and design engineers in an attempt to continuously improve the overall operating and construction characteristics of such pumps.
Centrifugal turbine pumps of the type covered by the present invention are generally mass-produced on a vast industrial scale so that, owing to reasons pertaining to substantially manufacturing costs and space requirements, i.e. compact size, there is no possibility for all typical measures and provisions of both a design and technical nature to be taken and implemented in these pumps as they are on the contrary usually taken and implemented in pumps for industrial and professional applications in general, in which there are involved much higher flow rates and power ratings, actually.
the diameter D of the delivery conduit 2 does neither narrow nor widen at the outlet from the pumping chamber 3, since said delivery conduit 2 is directly connected to the machine-side use conduit 4, which - as just roughly schematized in the above-cited Figures - is connected to said delivery conduit 2 of the pump immediately downstream therefrom, and has the same diameter D as said delivery conduit 2, actually.
an option may of course lie in providing an appropriately shaped and contoured joint configuration with a gradually increasing cross-section area, so as to avoid forming chambers in which vortices can develop and become established.
transition region 6 that is physically part of said delivery conduit.
the area of said inflow section S1 is made significantly smaller than the area of said outflow section S2.
said delivery conduit is provided so that it widens gradually out in its cross-section to develop into such shape that a projection thereof on a plane lying orthogonally to the axis of the impeller would trace out a P-shaped contour featuring two concavities C1, C2, the first one C1 of which faces the exterior of the conduit with a vertex V1, whereas the second one C2, with a vertex V2, is facing the interior of the same conduit.
the face 7 of the inner surface portion of said P-shaped contour that faces the pumping chamber 3 is given a substantially planar shape, so that the projection thereof on a plane lying orthogonally to the axis C of said delivery conduit 2 appears as a segment 7.
such feature will generally enable the length of the delivery conduit to be reduced, however without introducing any risk of small vortices being likely to be brought about by the shortness of the delivery conduit.
the actual advantage of the present invention lies in providing a centrifugal turbine pump, the delivery or discharge conduit of which features such inflow section as to be able to make as best as possible a use of and take as best as possible an advantage from the characteristics of the pumping chamber, the impeller, and the operating parameters thereof, and such outflow section as to fully comply with the mechanical-interface constraints and requirements set by the appliance in which the pump is due to be installed and operate.
Figures 6A through to 6E are respective cross-sectional views of the delivery conduit, as viewed along the respective section planes extending parallel to each other and orthogonally to said axis C, from Pa to Pe in Figure 5.
the available free passage area 9 of the delivery conduit increases in a gradual manner from a Figure to the next one, corresponding exactly to the gradual increase in the cross-section area of the same conduit.
the side 7 that widens out inside the delivery conduit keeps in all cases having a substantially planar contour, so as to be able to couple in a natural manner with the shape of the inflow section S1 of the delivery conduit.
the pump body which includes the pumping chamber 3 and the delivery conduit 2
the pump body which includes the pumping chamber 3 and the delivery conduit 2
the pump body which includes the pumping chamber 3 and the delivery conduit 2
the pump body to be entirely provided as a single-piece unitary construction, so as to also include said transition region of said delivery conduit having a gradually increasing cross-section area.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Structures Of Non-Positive Displacement Pumps (AREA)
Centrifugal Separators (AREA)
Control Of Non-Positive-Displacement Pumps (AREA)

EP07107420A 2006-05-24 2007-05-03 Turbinenkreiselpumpe Not-in-force EP1860324B1 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
PL07107420T PL1860324T3 (pl)	2006-05-24	2007-05-03	Odśrodkowa pompa turbinowa

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
IT000019U ITPN20060019U1 (it)	2006-05-24	2006-05-24	"turbo-pompa centrifuga idraulica perfezionata"

Publications (3)

Publication Number	Publication Date
EP1860324A2 true EP1860324A2 (de)	2007-11-28
EP1860324A3 EP1860324A3 (de)	2008-03-05
EP1860324B1 EP1860324B1 (de)	2009-07-29

Family

ID=38269015

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP07107420A Not-in-force EP1860324B1 (de)	2006-05-24	2007-05-03	Turbinenkreiselpumpe

Country Status (6)

Country	Link
EP (1)	EP1860324B1 (de)
AT (1)	ATE438038T1 (de)
DE (1)	DE602007001718D1 (de)
ES (1)	ES2329186T3 (de)
IT (1)	ITPN20060019U1 (de)
PL (1)	PL1860324T3 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
ITPN20120008A1 (it)	2012-02-07	2013-08-08	Nidec Sole Motor Corp S R L	Turbo-pompa centrifuga con camera di pompaggio perfezionata

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2635548A (en) *	1945-12-21	1953-04-21	Brawley Pump Company	Rotary pump
US2992617A (en) *	1958-10-23	1961-07-18	Worthington Corp	Centrifugal pump with self-priming characteristics
US3365122A (en) *	1966-02-02	1968-01-23	Rotron Mfg Co	Centrifugal blower
US4629394A (en) *	1983-07-25	1986-12-16	Chandler Evans Inc	Centrifugal pump having low flow diffuser
JPS59131799A (ja) *	1983-12-19	1984-07-28	Hitachi Ltd	遠心形流体機械のケ−シング
US5127800A (en) *	1984-03-20	1992-07-07	Baker Hughes Incorporated	Flow-stabilizing volute pump and liner
FR2666383A1 (fr) *	1990-08-29	1992-03-06	Proizv Ob Nev	Compresseur centrifuge.
JP3622300B2 (ja) *	1995-12-05	2005-02-23	株式会社デンソー	遠心送風機
US6146092A (en) *	1998-07-13	2000-11-14	Ford Motor Company	Centrifugal blower assembly with a diffuser
WO2002028257A1 (en) *	2000-09-29	2002-04-11	Oreck Holdings, Llc	Contoured intake ducts and fan housing assemblies for floor care machines

2006
- 2006-05-24 IT IT000019U patent/ITPN20060019U1/it unknown
2007
- 2007-05-03 ES ES07107420T patent/ES2329186T3/es active Active
- 2007-05-03 EP EP07107420A patent/EP1860324B1/de not_active Not-in-force
- 2007-05-03 DE DE602007001718T patent/DE602007001718D1/de active Active
- 2007-05-03 AT AT07107420T patent/ATE438038T1/de not_active IP Right Cessation
- 2007-05-03 PL PL07107420T patent/PL1860324T3/pl unknown

Also Published As

Publication number	Publication date
PL1860324T3 (pl)	2009-12-31
EP1860324A3 (de)	2008-03-05
DE602007001718D1 (de)	2009-09-10
ITPN20060019U1 (it)	2007-11-25
ATE438038T1 (de)	2009-08-15
ES2329186T3 (es)	2009-11-23
EP1860324B1 (de)	2009-07-29

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2008-11-19	RTI1	Title (correction)	Free format text: HYDRAULIC CENTRIFUGAL TURBINE PUMP
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